Villain is a regular i've played a decent amout with at 100nl, 200nl and now 400nl. I have caught him doubling air in a 3 bet pot before. This is the first time i've played with him at 400nl and he probably knows I just moved up and could view me as scared money I guess. He probably thinks i'm spewy preflop from 200nl and below I don't know if he thinks I carried that up to 400.

He runs 26/20/3.5 and has a high turn and river cbet%

Pokerstars 400nl:

Hero (Button) ($619.20)
SB ($438.50)
BB ($753.60)
UTG ($459.00)
MP ($746.70)
CO ($440.30)

Preflop: Hero is Button with Q, 10
2 folds, CO raises to $16.00, Hero raises to $48.00, 2 folds, CO calls $32.00

Flop: ($102.00) 8, 10, K (2 players)
CO checks, Hero checks

Turn: ($102.00) K (2 players)
CO bets $74.00, Hero calls $74.00

River: ($250.00) 7 (2 players)
CO bets $214.00, Hero?

What do you think about calling this river?